[sdiy] Siel Mono too out of tune to adjust

[cheater cheater]

This is the most surprising tuning bug ever.

D.

On Sun, Apr 11, 2010 at 15:41, Andre Majorel <aym-htnys at teaser.fr> wrote:
> On 2008-08-22 22:56 +0200, Andre Majorel wrote:
>
>> The tuning on my Siel Mono has drifted so much that it cannot be
>> fixed with the fine tune tab below the joystick any more.
>>
>> The corresponding preset, Pc4, is already fully anti-clockwise so
>> it cannot be adjusted that way either.
>>
>>   http://www.teaser.fr/~amajorel/mono/schematics/contacts_1.png
>
> Solved (finally). There is a tiny Phillips screw on the joystick
> assembly that clamps the shaft of the pot. Loosen it, put
> everything in neutral position, turn the shaft until the Mono is
> in tune, tighten down the screw and you're done. On mine, that's
> when the voltage on pin 6 of ICc4 is about +1.21 V.
>
> So it probably wasn't the aging of the components, just a
> mechanical problem.
>
> --
> André Majorel http://www.teaser.fr/~amajorel/
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